/* 选购指南 */
.buy-help{
    width: 100%;
    margin-top: 80px;
    overflow: hidden;
}
.buy-help .title {
    margin-bottom: 30px;
}
.buy-help .title h2{
    background-position: 0 -398px;
}
.buy-help .boxs{
    width: 100%;
    height: 393px;
}

.buy-help .left-box{
    float: left;
    width: 523px;
    height: 393px;
    position: relative;
    margin-right: 10px;
}

.buy-help .left-box .words{
    width: 523px;
    height:120px ;
    background: rgba(0, 0, 0,0.5);
    position: absolute;
    bottom: 0;
    left: 0;
    color :white;
    padding-left: 20px;
    box-sizing: border-box;
}
.buy-help .left-box .words h2{
    font-size: 25px; 
    line-height: 1em;
    margin-top: 15px;
}
.buy-help .left-box .words p{
    font-size: 12px;
    line-height: 22px;
    overflow: hidden;
    color: #fff;
    width: 310px;
    margin-top: 16px;
    /* white-space: nowrap;
    text-overflow: ellipsis; */
    /* display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2; */
}
.buy-help .middle-box{
    width: 370px;
    height: 192px;
    float: left;
    margin-bottom: 10px;
    position: relative;
    margin-right: 10px;
}
.buy-help .middle-box .words{
    text-align: center;
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    color:white;
}
.buy-help .middle-box .words h5{
    margin-top: 70px;
}

.buy-help .right-box{
    width: 285px;
    height: 393px;
    position: relative;
    float:right;
   
}
.buy-help .right-box .words{
    width: 160px;
    height: 160px;
    position: absolute;
    text-align: center;
    left: 50%;
    top: 50%;
    margin-left: -80px;
    margin-top: -80px;
    color: white;
    background: rgba(0, 0, 0,0.5);
    box-sizing: border-box;
}
.buy-help .right-box .words h5{
    margin-top: 50px;
    text-align: center;
}